Table 2.

During Covid PM 2.5 dispersion in part of Greater Chennai and Present Covid cases.

During Covid PM 2.5
Corona +ve incidence	Concentration Range in μg/m3	% Distribution
12	3–10	13.79
33	11–16	37.93
17	17–23	19.54
15	24–29	17.24
2	30–36	2.30
7	37–43	8.05
0	44–49	0.00
0	50–56	0.00
1	57–62	1.15
0	63–69	0.00